A transfer of energy by a force to move and object

Which of the following is the best example of work being done?

You lift a heavy box off the floor

You stand still holding a heavy box

Work is being done in both lifting and holding a heavy box

No work is being done for either lifting nor holding a heavy box

How are work and energy related?

The work done by an external force acting on an object causes a change in the mechanical energy of the object.

Work is the same thing as energy. They are equal.

Energy is m*g*h, and work is 1/2*m*v 2

What does an energy conversion diagram show us?

How energy transforms within an object.

How energy transfers from one object to a different one.

Which object(s) show energy elastic?

a football flying through the air

a satellite accelerating as it leaves the earth

For a spring to store energy elastic it can be ______________.

neither compressed or stretched

Which of the following is a true statement regarding springs?

The higher the value of the spring constant, the stiffer the spring.

In Hooke's law, the force exerted by the spring acts in the same direction as displacement.

Springs are designed to provide unpredictable variations in force.

The force exerted by a spring has a quadratic relationship with the displacement form equilibrium.

Which spring position is storing the most energy elastic?

All are storing the same amount of energy elastic.

Energy Review

Authored by Charles Martinez

Physics

10th - 12th Grade

NGSS covered

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41 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

Tags

NGSS.HS-PS3-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

At which point(s) on the roller coaster is the kinetic energy at its maximum?

Tags

NGSS.HS-PS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In diagram 2, if the mass of the car is 600 kg, what is the change in potential energy from point A to point B?

411,600 J

294,000

176,400 J

117,600 J

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In diagram 2, if the 600 kg cart is initially at rest, what is its velocity at point B?

19.8 m/s

15.0 m/s

10.3 m/s

3.8 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1. A ball has a 17 J of kinetic energy and its mechanical energy is 25 J. If the ball has a mass of 3.2 kg, what is its height above the ground?

0.26 m

0.52 m

5.2 m

25 m

Tags

NGSS.HS-PS3-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is mechanical energy?

It is what metal creates when heated.

All potential and kinetic energy in a system.

It is motion of all matter.

Energy of momentum.

Tags

NGSS.HS-PS3-3

NGSS.HS-PS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What does the Law of Conservation of Energy state?

Energy cannot be created or destroyed

Nothing can exchange energy

Energy will increase over time.

Energy will decrease over time.

Tags

NGSS.HS-PS3-2

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Energy Review

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

At which point(s) on the roller coaster is the kinetic energy at its maximum?

In diagram 2, if the mass of the car is 600 kg, what is the change in potential energy from point A to point B?

In diagram 2, if the 600 kg cart is initially at rest, what is its velocity at point B?

1. A ball has a 17 J of kinetic energy and its mechanical energy is 25 J. If the ball has a mass of 3.2 kg, what is its height above the ground?

What is mechanical energy?

What does the Law of Conservation of Energy state?

Energy of motion is which type of energy?

Work is:

What force ultimately slows the roller coaster to a stop?

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